Value Collection 101447PR Set Screw 3/8-16 X 5/16 in Cup Point

Product Description

The VALUE COLLECTION 101447PR is a cup point set screw designed for secure shaft-to-hub and collar-to-shaft locking in mechanical assemblies. Manufactured from Grade 8 alloy steel, it delivers the high tensile strength required in demanding industrial and trade applications. The 3/8-16 UNC thread with a 5/16-inch overall length keeps the fastener fully recessed within the host component. Drive engagement is through a 3/16-inch hex socket. This fastener meets ASME/ANSI B18.3 and ASTM F912 standards. Machinists, millwrights, maintenance technicians, and mechanical contractors install this type of set screw in rotating equipment, conveyor systems, and general mechanical assemblies.

The cup point geometry bites into the mating shaft surface to resist rotational and axial movement without requiring a separate locking feature. It is suited for use in pulleys, sprockets, shaft collars, couplings, and similar components where a headless, flush-mount fastener is required. The UNC thread form is compatible with standard inch-series tapped holes. This fastener is sold individually but must be ordered in multiples of 100.

Key Features

• Grade 8 alloy steel construction for high tensile and torsional strength
• Cup point tip digs into shaft surface for positive grip and resistance to loosening
• 3/8-16 UNC thread for compatibility with standard inch-series tapped holes
• 3/16-inch hex drive socket for standard hex key or Allen wrench installation
• Fully headless design sits flush or recessed within the host component
• Meets ASME/ANSI B18.3 and ASTM F912 fastener standards

Compatibility

Designed as a direct-fit replacement or standard-stock set screw for any application requiring a 3/8-16 UNC x 5/16-inch cup point headless set screw in alloy steel. Suitable for use in shaft collars, couplings, pulleys, sprockets, and similar mechanical components with a corresponding tapped hole.

Installation Notes

Installation is performed with a 3/16-inch hex key torqued to the fastener manufacturer or equipment OEM specification for the thread size and grade. Ensure the mating shaft and tapped hole are clean and free of debris before threading. Do not overtighten, as the cup point can cause permanent surface marking on the shaft. Follow applicable mechanical and equipment codes for the specific application.